Senior Dog Monthly Cost Calculator

How We Calculate These Estimates

Our cost calculator uses average prices from Amazon and major pet retailers, updated regularly. We break costs into four main categories that cover the essentials of senior dog care.

Food Costs

Senior dog food generally costs more than adult formulas because of added joint-support ingredients, higher protein ratios, and easier-to-digest recipes. Prescription diets — often recommended for dogs with kidney, liver, or digestive conditions — cost significantly more, typically 1.5x to 2x the price of standard senior food.

For a small dog, expect to spend $30–$50/month on standard senior food or $60–$90 on prescription. Large dogs can easily reach $60–$90 for standard and $100–$160 for prescription diets.

Supplement Costs

The most common supplements for aging dogs are glucosamine/chondroitin for joints, fish oil for inflammation and coat health, and probiotics for digestion. A basic supplement regimen runs $20–$40/month depending on dog size and brand quality.

Bedding & Mobility Aids

An orthopedic dog bed is typically a one-time purchase of $50–$150, which we amortize over 12 months. If your dog has mobility issues, you may also need ramps ($40–$120), a support harness ($25–$60), or grip socks ($10–$20). These one-time costs spread out to roughly $10–$30/month.

Hygiene Products

Dogs without incontinence issues still need basic grooming supplies — dental care, wipes, and occasional bathing products run about $10–$20/month. Dogs with incontinence need washable diapers or disposable pads, waterproof bed covers, and cleaning supplies, which can add $30–$60/month.